Condenser construction



May 13, 1930. -c. AfBOYD 1,758,495

CONDENSER COIISTRUCTION Filed April 18. 1925 2 Sheets-Sheet 1 1 .\'VENTOR.

Car/es Boyd BY $07: t 1TTORNE)5.

May 13, 1930. c A. BOYD CONDENSER CONSTRUCTION 2 Sheets-Sheet '2 FiledApril 18. 1925 IN VEN TOR. ('22 arias .Z Ba

ATTORNEY UNITED STATES PATE'NT OFFICE CHARLES I BOYID OF CLEVELAND,OHIO, ASSIGNOR TO THE OIL CONSERVATION ENGI- NEERING COMPANY, OFCLEVELAND, OHIO, A CORPO RATIONOF OHIO CONDENSER CONSTRUCTIONApplication filed April is, 1925. Serial 1%. 24,0a1.

The present invention relates to heat exchangers and more particularlyto the construction of heatv exchanger or condenser units whichareparticularly adapted for s-cooling the condensing vapors and forcooling the condensate. The present-type of condenser units provides alarge cooling surface both interiorly and exteriorly, the walls of theunit being formed in convolutions so as to provide as great a coolingsurface as possible but the construction is such as to reduce theaccumulation of dirt or the like in. the unit and toallow for the easycleaning thereof. To the accomplishment of the foregoing and relatedends, said invention,

then, consists 6f the means hereinafter fully described and particularlypointed out in the claims.

The annexeddrawings and the following 2 description set forth in detailcertain mech- 1 ;,Fig. 5 is a view similar to Fig. 1 but showing amodified form of unit; Fig. 6 is an end elevational view of the formshown in Fig. 5; and Figs. 7 and 8 are sectional views on the lines 7 7and 8-8 respectively of Fig. 5.

In the preferred form as shown in Fig. 1,

the present heat exchangercbnsists of a hollow unit, preferably ofcasting or a formed pipe having end flanges 2 or other suitableconnecting type of ends by which it may be attached to the usual headersor' connecting pipes'or other units. The body of the unit has alongitudinal passageway 4 therethrough and the unit is formed with aseries of convolutions 3 which are in the form of a sub-' stantiallycontinuous helix. The center line a-a of the interiorzof the helix isofiset above the center line 5-6 of the passage 4 and thus theconvolutions ofthe helix terminate tangent to the bottom of the unitforming a substantially smooth bottom floor 6 for the condensed liquidto flow over.

The convolutions are each provided on the outside with a rib 7 or likecooling flange .and these ribs form a continuous external helix aroundthe casing unit. Thus the passage 4 from the ends provides a circularopening through the unit with a series of helically arranged grooveswhich increase the cooling surface but which may easily be cleaned as abrush or the like centered on the line w-a will follow the convolutionsas well as clean the entire interior of the unit.

In the form shown in Figs. '5 to 8, the body of the unit is rovided withthe end flanges 10 and in this orm the center .line of the con-'volutions 11 or helix is the same as the center line of the passage 12.v A rib 13,is provided on the outside of the convolutions to increasethe coolin surface. In this form a. wire brush or the, ike may be forcedin and the unit cleaned but the unit does not provide the smooth bottomor floor for the flow of liquid. However, the unit may be rotated onitsaxisso as to change the top and bottom and this is advantageous'undercertain conditions where the vapors being condensed at the top of theunit and by changing the position about the center axis, the corrosion'can be equalized and the unit used the longest possible time.

. Other-modes'of applying the principle of my invention may be employedinstead of the one explained, change -bemg made as regardsthe mechanism,herein disclosed, provided theImeans stated b any of the 'followingclaims/or the equiva em; of such stated cause corrosion. The corrosionis most rapid spaced parallel lines so as to make the convolutions mergewith the wallrof the casing along one'side of the casing.

2. A condenser unit consisting of a hollow casting having asubstantially continuous helica groove forming a series of convolutionsexteriorly and interiorly of the casting, the axis of the hollow passageand the exls of the helical convolutions lying on spaced parallel linesso as to make the convolutionsmerge with the wallof the casing along thebottom of the casing thus forming a substantially flat floor for thepassage of liquid.

Signed by me this 15th day of A ril, 1925.

- CHARLES A. OYD.

